Hi Dennis ---- can you expand on the vapor recovery system and charcoal
canister. I have an 84 Westy and had the gas tank replaced about 3 months
ago. Every so often I'll (usually on a longish trip --- and seemingly after
filling up with gas) get a serious powerloss in the engine (a 1.8 I4
incidentally). The engine loses power --- I coast to the side of the road
and the if the engne starts it doesn't go for long.  In desparation at one
stage I took the gas cap off and started the formerly non-starting engine
--- ran rough for a bit and then ran strong. Does this ring any bells with
you. As I said, the gas tank has just been replaced and all the relevant
venting stuff is new and functional. Sounds like what you're talking about
might have some bearing on my situation --- god knows it's driving me crazy
:-)

Thanks,
Doug

On 12/13/07, Dennis Haynes <d23haynes57@hotmail.com> wrote:
>
> The aftermarket repalcement tank uses the same outlet as used from
> 1980-1985. The prepump fuel filter used on thse years makes the perfect
> adapter. Make sure the vapor recovery system (venting) is working properly
> and that the charcoal canister is not about to dump the carbon and block
> the
> inlet tube. The replacement tank will not put up any fight at all for the
> pump suction to collapse it. BTDT!
>
> Dennis
>
>
> >From: Dan Barrett <dbx@POBOX.COM>
> >Reply-To: Dan Barrett <dbx@POBOX.COM>
> >To: vanagon@GERRY.VANAGON.COM
> >Subject: fuel tank <-> pump diameter mismatch
> >Date: Thu, 13 Dec 2007 00:13:38 -0500
> >
> >Volks,
> >   Just had a new fuel tank put in my 1990 GL because the old one was
> well
> >rusted.  I could've sworn that on my old tank, the diameter of the tank
> >outlet and the diameter of the fuel pump inlet were equal -- it was a
> >stretch of larger-diameter hose connecting the two.
> >
> >   The new tank's outlet looks to be narrower than the old one's: the
> same
> >diameter as the line coming out of the fuel pump, i.e. the 7mm (?) line
> >that runs to the engine compartment.  But that leaves me with hooking up
> >the large-diameter fuel pump inlet to the small-diameter fuel tank
> >outlet.  The shop I took it to (a bunch of VW old-timers who work almost
> >entirely on air-cooleds) fashioned some kind of adapter out of what
> >looks like copper tubing and solder to mate the wide fuel pump line to a
> >narrower bit of hose connected to the fuel tank outlet.
> >
> >   I'd be laughing about it if it weren't leaking ever so slightly when
> the
> >engine is off.
> >
> >   So, now it's snowing out, my fuel system is slowly leaking onto the
> >street, and I'm wondering what to do.  I've never had anything between
> >the fuel pump and the tank (like that weird box filter on Bentley
> >20.26), so what on earth is going on here?  What if I just put a length
> >of 7mm hose over the fuel tank outlet pipe to build up its diameter, and
> >then clamp the wider-diameter fuel pump line over that?  Any guidance
> >appreciated.
> >
> >Best,
> >d.
> >1990 GL -- "Mudskipper"
>

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